#app {
  width: 100vw;
  height: 100vh;
  overflow-x: hidden;
  overflow-y: overlay;
  overflow-y: scroll;
  .page-node {
    width: 1100px;
    margin: 0 auto;
    padding-top: 50px;

    .nav-search {
      display: flex;
      height: 40px;
      // border: 1px solid #8a8a8a;
  
      input {
        width: 400px;
        height: 100%;
        padding-right: 8px;
        text-indent: 12px;
        outline: none;
      }
  
      .f-btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 48px;
        height: 100%;
        user-select: none;
        border-radius: 2px;
        border-top-left-radius: 0;
        border-bottom-left-radius: 0;
        font-size: 16px;
        letter-spacing: 4px;
        color: #fff;
        background-color: rgba(0, 119, 255, 0.7);
        cursor: pointer;
        // transition: all 0.1s linear;
        &:hover {
          background-color: rgba(0, 119, 255, 0.85);
        }
        &:active {
          background-color: rgba(0, 119, 255, 1);
        }
      }
    }
    
    .course-top {
      display: flex;
      margin-top: 20px;
      padding: 10px 16px;
      // border: 1px solid #8a8a8a;
      background-color: #f7f7f7;
  
      a {
        height: 30px;
        line-height: 30px;
        padding: 8px 16px;
        font-size: 14px;
        font-weight: normal;
        cursor: pointer;
        text-decoration: none;
        &:hover {
          color: #0077ffb3;
        }
      }

      .cur-tab-item {
        user-select: none;
      }
  
      // 选中状态
      .cur-top {
        transition: all 0.2s linear;
        color: #fff !important;
        background-color: #0077ffb3;
      }
    }
  
    .course-wrapper {
      padding-top: 20px;
      min-height: 400px;
      // border: 1px solid #8a8a8a;
      .course-list {
        display: flex;
        flex-wrap: wrap;
        margin-left: -8px;
        min-height: 400px;
        
        .course-item {
          width: 213px;
          height: 205px;
          padding: 6px 6px 10px;
          margin: 0 0 20px 8px;
          // background-color: #ececec;
          border: 1px solid #ececec;
  
          &:hover {
            box-shadow: 0 2px 4px 0px rgba(0, 0, 0, 22%), 0 0 6px rgba(0, 0, 0, 14%);
          }
  
          img {
            width: 100%;
          }
  
          .img-link {
            display: block;
            width: 100%;
            height: 110px;
          }
  
          .item-status {
            position: relative;
            margin-top: -20px;
            margin-bottom: 6px;
            padding: 4px 0 4px 4px;
            font-size: 12px;
            color: #fff;
            background-color: rgba(0, 0, 0, 0.5);
            z-index: 1;
          }
  
          .item-tt {
            height: 40px;
            margin-bottom: 10px;
            overflow: hidden;
            .tt-link {
              font-size: 14px;
              font-weight: normal;
              &:hover {
                color: #0077ffc0;
              }
            }
          }
  
          .item-line {
            .item-price {
              font-size: 14px;
            }
            .item-info {
              float: right;
              margin-top: 4px;
              font-size: 12px;
              font-weight: bold;
              color: #7a7a7a;
            }
  
            .free {
              color: #68c500;
            }
  
            .vip {
              color: #e2001c;
            }
          }
        }

        .loading {
          margin: 160px auto;
          img {
            width: 80px;
          }
        }

        .no-data {
          margin: 0 auto;
          .no-data-img {
            width: 200px;
          }
          .no-data-text {
            margin-top: 20px;
            color: #a0a0a0;
            font-size: 16px;
            font-weight: bold;
          }
        }
      }
    }
  }
}